1. The Working Memory Model
Specification
A – Models of Memory
The multi-store model including concepts of encoding, capacity and duration. Strength and weaknesses of the model
The working memory model including its strengths and weaknesses
B – Memory in everyday life
Eyewitness testimony and factors affecting the accuracy of EWT including anxiety and age of witness
Misleading information and the use of cognitive interview
Strategies for memory improvement
Homework
Read through the key points on p.24
‘Outline and evaluate the working memory model’ (12 marks) (Exam board example)
Starter
Go into your memories and find…
One song you know most of the lyrics to
One line from a book you could recite
One line from a film you could recite
A room you could completely picture

2. The Working Memory Model
Dual task technique: participants are asked to carry out a primary task while also engaging in a secondary task. Performance is compared to performance on each of the tasks when done individually
Baddeley and Hitch questioned what short term memory was for, they contested Atkinsons and Shiffrin’s model which looks at the idea of STM as a unitary store
To test this idea they devised the dual task technique
Baddeley and Hitch claimed that the case of KF (who had a digit span of two yet could transfer memory to his LTM) suggests that STM is not a unitary store

3. Lets try it!
Method:
Perform a reasoning task while simultaneously reciting aloud a list of six digits
Hypothesis:
If digit span is a measure of maximum STM capacity, participants would be expected to show impaired performance on the reasoning task because their STM would be fully occupied with retaining the six digits
Get into pairs/threes
Participant: Recite the number while ticking true/false on your sheet
Experimenter: Watch how long it takes the participant to complete the task and how many answers are correct
Conclusions
STM must have more than one component and must be involved in processes other than simple storage.
Baddeley and Hitch envisaged STM as a workspace where a variety of operations could be carried out on both old and new memories.
Two tasks can be carried out simultaneously in STM provided that they are being dealt with by different parts of the memory system.
Baddeley and Hitch envisaged LTM as passive store that maintains previously learned material for use by the STM when needed.

4. The working memory model: Lets build it!
The working memory model has three main components:
Central Executive
Phonological Loop
Visuo-Spatial Sketchpad
Get into four groups and work on understanding the WMM using p You must draw a diagram. You will then need to explain it to another group – prize for the best team!
Prepare for an exam question….
Central Executive
Phonological Loop
Articulatory control system
(articulatory loop)
Phonological store
Visuo-spatial sketchpad
Inner scribe
Visual Cache
Where is the evidence to prove this model?

5. Eye on the Exam
A.) Outline key features of the working memory model. (6 marks)
AO1 = 6 marks For identification of components of the model and brief outline of their function
Likely features are the three main components:
• Central executive, in charge of co-ordinating the other two slave systems, involved in attention and higher mental processes. It has limited capacity and can process information from any mode.
• Phonological loop involved in holding speech-based information and
articulatory control processes inner speech
• Visuo-spatial scratchpad deals with visual/spatial information and is involved in pattern recognition, perception of movement.

6. Eye on the Exam
B.) Four of the statements are descriptions of different components of the working memory model. (4 marks)
Stores acoustically coded items for a short period
Stores and deals with what items look like and the physical relationship between them
Encodes data in terms of its meaning
Acts as a form of attention and controls slave systems
Silently repeats works that are heard or seen
Components of working memory model
Descriptions of components
Phonological store
Visuo-spatial sketch pad
Articulatory process
Central Executive

7. Evidence for the WMM
Work in three groups to conduct experiments which provide evidence for the existence of:
Central Executive (p.23)
Phonological Loop (p.21)
Visuo-Spatial Sketchpad (p.21)
Phonological Loop
‘Romeo, Romeo, Wherefore art thou Romeo’
Remember this?
Its stored in your phonological loop!
Visuo-Spatial Sketchpad
Can you count how many windows there are in your home?
Its stored in your visuo-spatial sketchpad!

8. Strengths and Weakness of the WMM
+ Most cognitive psychologists now use the term WM instead of STM
+ More plausible that the MSM as it explains STM in terms of temporary storage and active processing
+ Incorporates verbal reasoning as an optional process in the articulatory loop instead of being the sole means of transferring information
+ Can account for findings that are difficult for MSMs to explain
+ Evidence that PL plays a key role in the development of reading, it is not present in some children with dyslexia
+ Accounts for individual differences in memory processing
- Weaknesses -
- Exact role played by the central executive remains unclear
- It is questionable whether the central executive can be a single component or whether there are separate verbal and spatial working systems
- Cowan has suggested that in order to explain abilities such as text comprehension , working memory should encompass some kind of long term memory activation
- Berz criticises the model for failing to account for musical memory because we are able to listen to music without impairing performance on other acoustic tasks.

9. Eye on the Exam
Identify and explain one weakness of the working memory model (4 marks)
Identify and explain one strength of the working memory model (4 marks)

10. You’re hired…???
The US air force has devised a WMM test, which it uses to test it potential employees
Consider the following questions:
What sort of things are the US air force wanting to test in their potential employees?
What results would they be looking for in an ideal applicant?
Do you think a WMM test is a good way to test potential employees?
Would you get in? Why?